Proud of my stash

My son is 3 weeks and in the 2.5 weeks I have been pumping I have managed to save up all this milk :) almost all these bags have 5oz. It took me awhile to figure out to freeze them laying flat then stand them up :p I'm worried about going back to work in 3 short weeks and want to have as much milk saved as possible so far I think I'm doing good :) no one told me how challenging breast feeding and storing up a decent supply of milk is